Technics SL-PG420A - Page 24

SL-PG420A
No
Focus servo locked?
@ Microprocessor failure:
© 10401
@ Control system failure:
© (C6501,6504
@TR error amp. failure:.
| ©1C6501,6503,6504
@ Pickup failure:
* Radial coil
Radial servo locked?
-No
HE(RF) Signal
present?
°1C6501
— AGC circuit check method —
C305’s lead is 1.0Vp-p~1.5Vp-p.
@ DF/DAC circuit failure:
© 1C801
@ Low-pass filter circuit
failure:
e 1G802, 803
Audio signal
output present?
Play operation
@ AGC circuit faiture{RF Amp.)
Verify that HF signal amplitude at
“ Prifited in F.R. Germany
Auflage 7.820, Februar 1992